VISCOELASTIC PROPERTIES OF HIGH MOLECULAR-WEIGHT POLYMERS IN THE MOLTEN STATE .3. RELAXATION AND RETARDATION SPECTRA

被引:10
作者
MARIN, G
MONTFORT, JP
ARMAN, J
MONGE, P
机构
[1] Laboratoire de Thermodynamique Institut Universitaire de Recherche Scientifique, Université de Pau et des Pays de l'Adour, Pau, F-64000, Avenue Philippon
关键词
D O I
10.1007/BF01520360
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
This paper presents an analytical calculation of the relaxation and retardation spectra for narrow distribution polymers, binary blends and whole polymers. The retardation spectrum exhibits two peaks, one independent of molecular weight (transition region), and one shifting toward long times as the molecular weight increases (terminal region). The relaxation spectrum derived from this analytical retardation spectrum is shown to have a sharp cut-off at large times, this cutoff being smoothened when using conventional approximation methods to derive H(τ) from the experimental data. - The analytical retardation spectra of integrated relaxation spectra (from the retardation spectra) should be useful in the tests of constitutive equations. © 1979 Dr. Dietrich Steinkopff Verlag.
引用
收藏
页码:629 / 634
页数:6
相关论文
共 6 条
[1]  
Ferry J.D., 1961, VISCOELASTIC PROPERT
[2]  
Gross B., 1953, MATH STRUCTURE THEOR
[3]   VISCOELASTIC PROPERTIES OF HIGH MOLECULAR-WEIGHT POLYMERS IN MOLTEN STATE .1. STUDY OF NARROW MOLECULAR-WEIGHT DISTRIBUTION SAMPLES [J].
MARIN, G ;
GRAESSLEY, WW .
RHEOLOGICA ACTA, 1977, 16 (05) :527-533
[4]  
MARIN G, 1977, THESIS U PAU
[5]   BLENDING LAW FOR BINARY BLENDS OF FRACTIONS OF LINEAR POLYSTYRENE [J].
MONTFORT, JP ;
MARIN, G ;
ARMAN, J ;
MONGE, P .
POLYMER, 1978, 19 (03) :277-284
[6]   VISCOELASTIC PROPERTIES OF HIGH MOLECULAR-WEIGHT POLYMERS IN THE MOLTEN STATE .2. INFLUENCE OF THE MOLECULAR-WEIGHT DISTRIBUTION ON LINEAR VISCOELASTIC PROPERTIES [J].
MONTFORT, JP ;
MARIN, G ;
ARMAN, J ;
MONGE, P .
RHEOLOGICA ACTA, 1979, 18 (05) :623-628